⬆️ Bump datashader from 0.12.1 to 0.13.0 (#307)

Bumps [datashader](https://github.com/holoviz/datashader) from 0.12.1 to 0.13.0.
- [Release notes](https://github.com/holoviz/datashader/releases)
- [Changelog](https://github.com/holoviz/datashader/blob/master/doc/latest_news.html)
- [Commits](holoviz/datashader@v0.12.1...v0.13.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

pyproject.toml

@@ -13,7 +13,7 @@ cython = "^0.29.23"
 dask = "^2021.5.1"
 dask-cuda = {version = "^21.6.0", optional = true}
 dask-labextension = "^5.0.2"
-datashader = "^0.12.1"
+datashader = "^0.13.0"
 distributed = "^2021.5.1"
 dvc = "^2.4.2"
 geopandas = "^0.9.0"